Single-handle mixing faucet



FIG. 1 is a top, front, left-side elevational view of a single-handle mixing faucet showing my new design;

FIG. 2 is a left side elevational view thereof, the right side elevational view being mirror symmetrical thereto;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof. 

The ornamental design for a single-handle mixing faucet, as shown and described. 